基于实测响应的斜拉人行桥人致振动舒适度研究  

Research on the Vibration Serviceability of a Cable-stayed Footbridge Based on Field Measurement

作　　者：陈波[1] 王鑫[1] 刘浩[1] 胡健[1] 张文龙[1] 黄雨田[1] 

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070

出　　处：《武汉理工大学学报》2013年第7期99-103,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51178366);武汉理工大学自主创新研究基金(126606001);武汉理工大学创新创业训练计划(20121049706005)

摘　　要：研究了大跨轻柔斜拉人行桥人致振动舒适度问题。基于有限元方法建立了某大跨度斜拉人行桥的分析模型并进行了动力特性分析;进行了该桥在环境脉动激励作用下的动力特性实测和不同人行荷载作用下的动力响应测试;依据英国规范BS5400评价了该桥的振动舒适度状况。结果表明,该桥在人行荷载作用下存在较为显著的振动响应和一定程度的振动舒适度问题。The vibration serviceability of a large span cable-stayed footbridge was actively investigated.The basic information of a real large span cable-stayed footbridge was firstly introduced.The analytical model of the footbridge was established based on finite element method and the dynamic properties are computed.The dynamic properties of the footbridge were measured subjected to ambient excitation.In addition,the dynamic responses of the footbridge under human-induced loading were also tested.The vibration serviceability of the cable-stayed footbridge was evaluated in line with the British Standard BS5400.The made observations indicate that the dynamic responses of the footbridge is obvious and discomfort feeling can be observed to some extent.

关 键 词：振动舒适度 斜拉人行桥 动力响应 现场实测 

分 类 号：TU311.3[建筑科学—结构工程]